Solve the problem.The formula v = (2.5r)1/2 can be used to estimate the maximum safe velocity v, in miles per hour, at which a car can travel along a curved road with a radius of curvature r, in feet. To the nearest whole number, find the radius of curvature if the maximum safe velocity is 15.
A. 90 ft.
B. 563 ft.
C. 225 ft.
D. 36 ft.
Answer: A
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Evaluate the integral.
dx
A. 
+ ln
- 
+ C
B. (x + 3)2 tan-1 3x + ln
+ 
+ C
C. 
+ 
+ C
D. 
+ ln
+ 
+ C
Find the numerical value of the expression for 
and 
x - 2
A. a) 2 b) 16 B. a) 16 b) 2 C. a) 6 b) 20 D. a) 8 b) 36
Use properties of logarithms to expand the logarithmic expression as much as possible. Where possible, evaluate logarithmic expressions without using a calculator.loga x5
A. -5loga x B. -alog5 x C. alog5 x D. 5loga x
Solve the problem.An art teacher knows that for a price of $20 per student, she can enroll 40 students in her pottery class. However, for each decrease of $2 in the price, she can expect 10 more students. What price will maximize her revenue from the class?
A. $26 B. $8 C. $14 D. $17